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Readers Respond: Spirolaterals and Matrices.

Keith, Michael; Harvey, Brian – Computing Teacher, 1989

Discussion of the use of computers in math instruction highlights two possibilities suggested in response to an earlier journal column: (1) a program written in BASIC for producing spirolaterals, and (2) the use of LOGO list processing to solve matrix problems for exploring geometric transformations. (LRW)

Descriptors: Computer Assisted Instruction, Geometric Concepts, Mathematics Instruction, Matrices

Generating Classroom Examples of Matrices.

Peer reviewed

Schaefer, Paul – Journal of Computers in Mathematics and Science Teaching, 1989

Provides a program listing in True BASIC which constructs several kinds of matrices: (1) matrices with integral entries that have inverses that have integral entries; (2) matrices with integral entries that have inverses that are rational numbers with reasonable denominators; and (3) matrices with integral entries and prescribed integer…

Descriptors: Algebra, College Mathematics, Computer Oriented Programs, Computer Software